Hi, When I use RADOS, is there any way to store a group of objects into the same placement group? What are the relationships between pool, object and placement group? I'm a contributor of Apache HBase. HBase is a distributed, highly scalable database built on top of Hadoop Distributed File System (HDFS). I'd like to develop an adapter to store HBase's journals and data files onto RADOS instead of HDFS. Since HBase worker nodes (called Region Server) are collocated on the servers who are running OSDs, I'd like to take advantage of data locality. A Region Server writes journals and periodically flushes data files, and I want to store the primary copy of all these objects to the local OSD, so that the Region Server can read them from the OSD without wasting network bandwidth. Thanks, Tatsuya -- Tatsuya Kawano (Mr.) Tokyo, Japan http://twitter.com/#!/tatsuya6502 -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
